Coil-former.



J. BEE-GH.

COIL FORMER.

APrLIoATIoN FILED APB; 5, 1901.

946,531. Patented Jam18,191o.

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UNITED FATE@ JACOB BEECH, OF WILKINSBURG, PENNSYLVANIA, ASSIGNOR TO WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY, A CC'RPORATION 0F PENNSYLVANIA.

COIL-FORMER.

To all whom it 'may concern:

Be it ltnown that I, JACOB BEECH, a citizen of the United States, and a resident of lVillinsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Coil-Formers, of which the following is a specification.

My invention relates to formers or molds for metal wire or strap coils such as are adapted for use in dynamo-electric machines, and it has for its object to provide an improved former on which either one coil or a plurality of coils may be formed.

According to a well known method of winding coils for insertion in partially closed slots of dynamo-electric machines, a closed coil is formed by winding a plurality of turns on a former. The coil is then removed from the former and the conductors of which it is composed are inserted into the slots, one at a time, and finally the end-con necting portions of the coil are bound toget-her by means of tape or strips of insulation. In this way, the advantages incident to the use of partially closed slots may be obtained without the expenditure of the labor of connecting the several turns of open coils such as were formerly employed with closed and partially closed slots.

According to my present invention, I provide a former comprising several parts which may be assembled in various combinations so that the former may be adapted for winding a single coil or for winding two or more coils.

Figure l of the accompanying drawings is an elevation of a coil former constructed in accordance with my invention and arranged for winding three coils at one time. Fig. 2 is a view, similar to Fig. l but showing the parts of a coil former adapted for winding two coils at one time, the parts being slightly separated from each other to show the method of assembly. Fig. 3 is an elevation of the former at right angles to 'the views of Figs. l and 2.

Referring to the drawings, the coil former here shown comprises end blocks l and 2 which may be clamped together by a center bolt 3, the relative positions of the two blocks being fixed, when the apparatus is adapted for winding a single coil, by means of dowel pins 4C and holes 5 withl which the blocks l and 2 are respectively provided. A core block 6, the contour of which corresponds to Specification of Letters Patent. Pggtnted Jan, 18 1910, Application filed April 5, 1907.

Serial No. 366,503.

that of the completed coil, is fixed to the inner side of the end block l so that, when the blocks l and 2 are assembled, the block 6 acts as a spacer and forms the bottom of a slot or groove in which a coil may be wound. Then a coil is completed the members of the former may be separated from each other and the coil removed without cutting any of its turns.

In order to facilitate the work of coil winding, I may provide one or more intermediate partitions 7 having core blocks 8 which correspond to the block 6. Each of these intermediate members is provided with holes' on one side and dowel pins on the other which correspond, in position, to the holes 5 and the dowel pins 4L, respectively. Vhen the end and intermediate blocks are assembled, as shown in Fig. l, a plurality of similar grooves 9 are provided in which similar coils may be simultaneously formed. The end block 2 and the intermediate members 7 and 8 are provided with a cross slot 10 which is somewhat deeper than the grooves 9 and in which the ends of the coils may be placed when the winding process is commenced. Notches ll are cut in the end blocks l and 2 at two or more points for the purpose of receiving short lengths of tape over which the turns of the coils may be wound and which finally may be wrapped around the completed coil to maintain the relative position of the turns until they are wound in the slots of the machines. Since the intermediate members of the former are removable, any number of completed coils may be readily separated from the former without distorting them.

I desire that modifications which do not depart from the spirit of my invention shall be included within its scope.

I claim as my invention:

A coil former comprising heavy end blocks one of which has a laterally projecting coil-form, and a relatively narrow intermediate member having a laterally projecting coil-form, said members having dowel pin connections with each other.

In testimony whereof, I have hereunto subscribed my name this 30th day of March, 1907.

JACOB BEECH. Vitnesses:

VERYL BRoUGI-ITON, BLRNEY HiNEs. 

